Disco 2 headlight screws

I've been going over my new Disco 2 with a mind to making life easier. I don't want to find the ABC screws on my headlights are seized when I'm stuck in the dark, in the rain on a motorway services trying to replace a bulb, for example. I'm funny that way. This week I decided to check the headlights, removing the ABC screws before Copaslip-ing them and refitting. Annoyingly two were completely seized and the brass nuts came out of the plastic headlight body. I'm Plus Gassing them and I'm sure in time I'll release them, but has anyone else had similar problems? Are the headlights ok missing an A in one side and a B on the other? Have you refitted the brass nuts somehow? I'd be grateful for any advice.

Take the ones out of the front panel instead, I had to weld one headlamp to the plastic bracket

Thanks, I'll bear that in mind.